Large, multi-site studies utilizing MRI-derived measures from multiple scanners present an opportunity to advance research by pooling data. On the other hand, it remains unclear whether or not the potential confound introduced by different scanners and upgrades will devalue the integrity of any results. Although there are studies of scanner differences for the purpose of calibration and quality...

bstract. 3-D scanning has become increasingly popular in a wide ange of applications. We present a prototype 3-D/stereoscopic canning system based on a cheap, readily available flatbed scaner. Stereoscopic imaging is achieved by modifying the optical path f the ordinary flatbed scanner. The results of 3-D imaging using our rototype system are demonstrated, and a number of design lternatives are...

Laser scanning technology is one of the most integral parts of today's scientific research, manufacturing, defense, and biomedicine. In many applications, high-speed scanning capability is essential for scanning a large area in a short time and multi-dimensional sensing of moving objects and dynamical processes with fine temporal resolution. Unfortunately, conventional laser scanners are often ...

Every service that runs in cloud systems comes with its own set of vulnerabilities. It is important to detect and assess those vulnerabilities to provide seamless and secure service to the users. Various scanners such as Port scanner, Network scanner, Web application security scanner, Database security scanner, Host based vulnerability scanner etc provide security assessment. But these scanners...

The nonzero "response time" of AV technologies offers a lacuna for hackers to exploit. By the time an AV company responds with a signature to detect a malicious sample, a hacker may release thousands of new variants. We present a self-learning AV scanner that effectively zeroes the response time needed to detect variants. The scanner uses methods from information retrieval research to determine...

In this paper we present a novel 3D scanner to capture the texture characteristics of worn carpets into images of the depth. We first compare our proposed scanner to a Metris scanner previously attempted for this application. Then, we scan the surface of samples from the standard EN1471 using our proposed scanner. We found that our proposed scanner offers additional benefits because it has been...

The purpose of this study was to quantify the performance and assess the utility of two different types of scanners for radiochromic EBT film dosimetry: a commercial flatbed document scanner and a widely used radiographic film scanner. We evaluated the Epson Perfection V700 Photo flatbed scanner and the Vidar VXR Dosimetry Pro Advantage scanner as measurement devices for radiochromic EBT film. ...

The use of scanners to provide digital image files is rapidly growing. Currently there is no standardized method to determine the dynamic range of scanners. Therefore the data reported in technical specifications can be determined using different methods. An ISO 21550 Standard to measure the ability of scanners to reproduce tones especially in the dark areas of the original is currently under d...

In this report, we describe, justify and assess the quality of our design for a 3D scanner using Microsoft Kinect. A 3D model of an object can be obtained by taking both color and depth images from different viewpoints. We developed a streamline and a novel combination algorithm for this task. In the process, we had to solve problems involving noise, miss-alignment between color and depth, comb...

Paper presents procedures and experiences on using low cost desktop scanner Epson Expression 1640XL for orthophoto production. Complete process of scanning, scanner calibration and removal of systematic distortions of scanned images caused by scanner is developed and tested on several large projects of orthophoto production. Special, user-friendly software is developed for these purposes. The s...